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Posted by roninchuck on June 6, 2008, 9:18 pm
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Hi Group,
Is there a simple way to run a Blodgett Oven (208V 3 phase) from 240V 3
phase? My 240V 3 phase service has 3 wires coming in, there is no
neutral wire.
Thanks!
Chuck
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Posted by Pete C. on June 6, 2008, 9:37 pm
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roninchuck wrote:
>
> Hi Group,
>
> Is there a simple way to run a Blodgett Oven (208V 3 phase) from 240V 3
> phase? My 240V 3 phase service has 3 wires coming in, there is no
> neutral wire.
>
> Thanks!
>
> Chuck
Several options:
- Check with the manufacturer to see if the heating elements in the oven
are rated for 240V.
- Check with the manufacturer on the cost of a set of 240V rated
elements for the oven.
- Get a set of buck/boost transformers to buck the voltage down.
It's a toss up whether new elements or bucking transformers would be
cheaper, or you may be lucky and the elements are ok on 240V.
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Posted by Martin H. Eastburn on June 6, 2008, 9:38 pm
Please log in for more thread options Yes.
You need three bucking transformers. Each have 240 primary. The secondary
having 24V is connected in series with each (1 of 3) input line and the other
secondary line goes to the Oven. The phase of the voltage subtracting from
the 240 to 216. That will be in tolerance likely. If not increase (more money)
the secondary voltage.
The transformer (bucking) has to be able to handle the wattage of the bucking
voltage times the Oven current. Then add 100% for safety.
Talk to the Electrical supply person and they can help. A good Electrician
should be able to do that without thought.
Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/
roninchuck wrote:
> Hi Group,
>
> Is there a simple way to run a Blodgett Oven (208V 3 phase) from 240V 3
> phase? My 240V 3 phase service has 3 wires coming in, there is no
> neutral wire.
>
> Thanks!
>
> Chuck
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Posted by Greg O on June 6, 2008, 11:06 pm
Please log in for more thread options > Hi Group,
>
> Is there a simple way to run a Blodgett Oven (208V 3 phase) from 240V 3
> phase? My 240V 3 phase service has 3 wires coming in, there is no neutral
> wire.
>
> Thanks!
>
> Chuck
Never tried it, but could he run the oven off of one of Iggy's sale priced
VFDs?? Set the out put to 208, set the amps to the rating on the oven and
away you go!
If I am crazy and it would not work, let me know!
Greg
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Posted by Steve Lusardi on June 7, 2008, 4:12 am
Please log in for more thread options Chuck,
I'm confused. A 240 V 3 Ph supply should not exist. If you are in the states
and the difference is truly 30 volts per leg, you should be able to just run
the oven or complain to your power company, but if you mean that your leg
voltage is 120 V as opposed to 240 V, like in Europe, then you do need a 3
Ph step down transformer, but it is from 380 V to 208 V and they are
available, but pricey. Please clarify.
Steve
> Hi Group,
>
> Is there a simple way to run a Blodgett Oven (208V 3 phase) from 240V 3
> phase? My 240V 3 phase service has 3 wires coming in, there is no neutral
> wire.
>
> Thanks!
>
> Chuck
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> Hi Group,
>
> Is there a simple way to run a Blodgett Oven (208V 3 phase) from 240V 3
> phase? My 240V 3 phase service has 3 wires coming in, there is no
> neutral wire.
>
> Thanks!
>
> Chuck